在事实相反的假设，要用虚拟语气，故此处用were。

　　3．more intelligent　考查形容词的比较级。由设空前的"ten times"可知，此处表示比较，指(比以前)聪明十倍，应填形容词的比较级，而intelligent是多音节形容词，故填more intelligent。

　　4．stimulated　考查动词的时态。本句描述19世纪科学家所做的实验，因此用一般过去时。

　　5．its　考查代词。这里its指代the animal's。

　　6．are called　考查动词的时态、语态和主谓一致。which引导非限制性定语从句，which在从句中指代regions，此处描述一种研究发现，且call与regions是逻辑上的动宾关系，故填are called。

　　7．as/when　考查连词。这句话的意思是"事实上，当我们睡觉的时候，大脑的很多区域都是极度活跃的"。

　　8．Interestingly　考查词性转换。分析句子结构可知，空格处修饰后面的整个句子，因此此处要用副词Interestingly。

　　9．given　考查非谓语动词。此处given作定语修饰task，由于give与task之间为逻辑上的动宾关系，故用过去分词。

　　10．of　考查介词。be capable of doing sth. "有能力做某事"。

　　Ⅳ.短文改错

Dear Steven，

　　I would like to invite you to the annually Coming­of­age Ceremony of our school.

　　This big event would be held in the school auditorium from 9 am to 11 am in March 12. All the Senior Three students are expect to attend it with the company of their parents and teachers.

　　The Coming­of­age Ceremony is really a good chance for we students to express our gratitude to our beloved parents as well our patient teachers. Meanwhile, it will turn a new page in our life, that means we have grown up and it is time we shoulder more responsibilities for the family and society.

　　I'd appreciate it if you could come and share with the unforgettable moment with us. I'm looking forward to your arrive!

　　Yours，

　　Li Hua

　　答案：

Dear Steven，

　　I would like to invite you to the Coming­of­age Ceremony of our school.

This big event be held in the school auditorium from 9 am to 11 am March 12. All the Senior Three students are to attend it with the company of their parents and teachers.